WorksheetsEnvMicro_Quiz7
Total questions: 10
Worksheet time: 5mins
This biogeochemical cycle has no intermediate oxidation state forms:
C cycle
N cycle
S cycle
Fe cycle
The aerobic carbon use releases the following products except:
Water
Nitrite
Sulfate
Methane
Which of the following carbon-based compound is difficult to degrade:
Cellulose
Lipid
Starch
Lignin
The Winogradsky’s column illustrates:
C-cycle microbes
N-cycle microbes
P-cycle microbes
S-cycle microbes
Which interaction is the most effective N-fixing system:
N-fixers at rhizosphere
Cyanobacteria-moss
Free-living N-fixers
Anabaena-Azolla
Fate of nitrate in soil:
Plant uptake
Microbial uptake
Leached from soil
All
Following is true about P-cycle except:
Input is from OM
Phosphate is uptake by plant
Movement through plant/animal is slow
Input from fertilizer
Magnetotatic bacteria:
Are not real
Have magnetites
Immobilizes plutonium
Migrates to Uranium
This bacterium is found in both Fe and Mn cycles:
Arthrobacter
Lepthothrix
Pedomicrobium
Shewanella
Sulfate-reducing bacteria (SRB) is responsible for all except:
Methylation of mercury
Metal corrosion
Methylation of selenium
Concrete corrosion
